Multi-index assessment of heavy metal contamination in surface sediments of the Pearl River estuary intertidal zone

文献类型： 外文期刊

第一作者： Liang, Rui-Ze

作者： Liang, Rui-Ze;Liang, Rui-Ze;Gu, Yang-Guang;Li, Hai-Song;Han, Yan-Jie;Man, Xiang-Tian;Li, Hai-Song;Niu, Jie;Su, Hong;Jiang, Shi-Jun;Han, Yan-Jie;Man, Xiang-Tian;Jordan, Richard W.

作者机构：

关键词： Pearl River estuary; Intertidal zone sediments; Heavy metals; Sediment quality criteria; Ecological risk; Joint probabilistic risk

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.8； 五年影响因子：6.5 ）

ISSN： 0025-326X

年卷期： 2023 年 186 卷

页码：

收录情况： SCI

摘要： Surface sediments from 21 stations within the Pearl River estuary (PRE) intertidal zone were sampled for heavy metal contamination analysis. Average heavy metal concentrations (mg/kg) in the PRE intertidal zone were 118.5 (Cr), 860.4 (Mn), 19.5 (Co), 72.5 (Ni), 128.1 (Cu), 198.5 (Zn), and 73.0 (Pb), with the concentrations of Mn, Co, Ni, Cu, and Zn being significantly higher than their corresponding background values. The enrichment factor (EF) and geo-accumulation index (Igeo) reveal the same contamination status, with Pb, Ni, Co, Mn, and Cu showing slight to moderate contamination. Overall, the combined heavy metal concentration in the PRE inter-tidal surface sediments had a 24.7 % probability of toxic effects on aquatic biota based on the joint probabilistic risk (JPR) approach. Principal component analysis (PCA) coupled with the correlation analysis (CA) revealed that the heavy metal contamination in the PRE intertidal zone might originate from natural and anthropogenic sources.

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